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The performance and processing process of non -metallic materials are changing with each passing day, making its unprecedented speeds applied to the car. The amount of non-metallic materials for each sedan has improved from 68.4 kg in 1981 to the current 150-180 kg. At the same time, the market has put forward higher requirements for the corresponding performance of such materials, such as the impact of the condensation of the volatile substance on the car interior material on the windshield of the driver's driving, the permeability of the plastic fuel tank, the inner tire, and safety The obstruction of the airbags and so on. For these topics, the corresponding detection methods, testing standards, and detection instruments have also been launched and continuously improved.
The atomization detection of interior parts
Automobile interior decorative materials, such as engineering plastics, textiles, leather, non -woven fabrics, etc. Under the influence of high temperature, the easily volatile ingredients will evaporate and form a cohesion on the car window or windshield, causing the driver's poor sight and seriously affecting driving safety. At present, there are already tests in foreign countries. The relevant test standards followed are in 75201, ISO 6452, SAE J1756, etc. Some domestic automobile and interior production enterprises may also pay enough attention to related testing in order to improve the quality of the product or to develop overseas markets.
There are two test methods: gloss test method and weight test method. The former is measured by changes in the gloss before and after the glass plate, and the test -like atomization characteristics are measured; the latter is the quality of the atomization condensate through the change of the quality of the aluminum foil before and after atomization. In addition, the fog value or atomization-condensate quality that can be trial can also be quantified to obtain the volatile amount of the toxic and harmful substances of the sample; To how much the atomization phenomenon of the front lights of the car will affect the lighting.
Seating materials, diarrhea, humidity test
During the long journey, driving staff often take several or even dozens of hours in the car, Therefore, the ventilation and humidity performance of the car seat material is higher than other places. Good seat cushions and chairs should be soft and elastic, and have good breathability and humidity, so that the sweat of driving staff can be discharged smoothly and makes people feel comfortable.
The detection method of the heart and chest is: the samples of the specified size are placed in the test cavity, and the sample is taken in the sample to form a certain pressure difference on both sides of the sample. Under the pressure difference, the measuring gas can calculate the breathability through the flow of the area within a certain period of time, or keep the breathability; or keep the flow of the sample on both sides of the sample, and calculate the air circulation resistance. This test method follows IOS10655-2003.
